Replace string16 with base::string16.

chrome/browser/chrome_plugin_browsertest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
@@ skipping 67 matching lines @@
     base::FilePath path;
     PathService::Get(content::DIR_TEST_DATA, &path);
     path = path.AppendASCII("plugin").AppendASCII(filename);
     CHECK(base::PathExists(path));
     return net::FilePathToFileURL(path);
   }
 
   static void LoadAndWait(Browser* window, const GURL& url, bool pass) {
     content::WebContents* web_contents =
         window->tab_strip_model()->GetActiveWebContents();
-    string16 expected_title(ASCIIToUTF16(pass ? "OK" : "plugin_not_found"));
+    base::string16 expected_title(ASCIIToUTF16(pass ? "OK" : "plugin_not_found"));
     content::TitleWatcher title_watcher(web_contents, expected_title);
     title_watcher.AlsoWaitForTitle(ASCIIToUTF16("FAIL"));
     title_watcher.AlsoWaitForTitle(ASCIIToUTF16(
         pass ? "plugin_not_found" : "OK"));
     ui_test_utils::NavigateToURL(window, url);
     ASSERT_EQ(expected_title, title_watcher.WaitAndGetTitle());
   }
 
   static void CrashFlash() {
     scoped_refptr<content::MessageLoopRunner> runner =
@@ skipping 156 matching lines @@
   std::vector<content::WebPluginInfo> plugins = GetPlugins();
   for (size_t i = 0; i < ARRAYSIZE_UNSAFE(expected); ++i) {
     size_t j = 0;
     for (; j < plugins.size(); ++j) {
       if (plugins[j].name == ASCIIToUTF16(expected[i]))
         break;
     }
     ASSERT_TRUE(j != plugins.size()) << "Didn't find " << expected[i];
   }
 }